Last year I attented a course for making jewelry with artclay silver. It´s 99% silver, mixed with a fluid. It´s similar to real clay to work with. Diluted with more water you can put it into an injection, and extruding it like a "sausage" to create a grid, dilute it even more and you can brush it like paint, maybe onto a nice leaf of ginkgo. Than it has to dehydrate and then put it into a kiln.